1. Via Customizer

– Go to Customizer – Sidebar and set the position (left or right). You can setup the sidebar size.

2. In the post/page option tab

Every post and page has own section to setup the content. Edit the post/page and scroll below the content area. You can find there tab “Futurio Extra” with post/page options. Setup the sidebar position or disable it. This option override the option in Customizer on edited post/page.